Home / 13,704.90-20,519.18-8,762.34

Finding the Fourth Proportional to 13,704.90, 20,519.18 and 8,762.34

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Solution

The fourth proportional to 13,704.90, 20,519.18 and 8,762.34 is: 13,119.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.90 : 20,519.18 = 8,762.34 : x
  2. Step 2: Convert to fraction form
    13,704.90/20,519.18 = 8,762.34/x
  3. Step 3: Cross multiply
    13,704.90x = 20,519.18 × 8,762.34
  4. Step 4: Simplify right side
    13,704.90x = 179,796,031.68
  5. Step 5: Solve for x
    x = 179,796,031.68/13,704.90
  6. Step 6: Final answer
    x = 13,119.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.